This drama mainly tells the reunion of Jiang Xia, who was born on Chuanshan Island, with her childhood playmate Chen Yujiu. Over eight years, the two go from being familiar to being strangers and back to being familiar. In the process of getting acquainted and understanding again, the growing pains followed one after another, and the two got closer and closer as they grew up. Jiang Xia discovered Chen Yu's unknown past, and when fate struck again, she stood behind him and became his sun. (Source: Chinese = Yue365 || Translation = MyDramaList)